Abstract: The state of charge of a traction battery of a hybrid vehicle power train is managed by, during a phase of running of the vehicle to a current destination, predicting a temperature that a battery will reach, after the power train is switched off, at a time of departure to a future destination; estimating, as a function of the battery temperature previously predicted, a minimum state of charge of the battery making it possible to provide, during a phase of running to the future destination, a predefined minimum power level; and maintaining the state of charge of the battery close to the minimum state of charge.

Abstract: The state of charge of a traction battery of a hybrid vehicle power train is managed by, during a phase of running of the vehicle to a current destination, predicting a temperature that a battery will reach, after the power train is switched off, at a time of departure to a future destination; estimating, as a function of the battery temperature previously predicted, a minimum state of charge of the battery making it possible to provide, during a phase of running to the future destination, a predefined minimum power level; and maintaining the state of charge of the battery close to the minimum state of charge.

Abstract: A method estimates a duration of a battery performance rehabilitation phase. The method includes activating the battery performance rehabilitation phase when a power available in a battery is below a required minimum power level. The method also includes supplying a model of operation of the battery including, in a plane (BSOC, T) where BSOC denotes a state of charge of the battery and where T denotes a battery temperature, an isopower curve representing operating points of the battery enabling the battery to substantially deliver the required minimum power level, the curve separating operating points making it possible to deliver a power level above the required minimum power level from operating points enabling the battery to deliver only a power level below the required minimum power level. The method also includes estimating the duration of the battery performance rehabilitation phase from the model of operation supplied.